globals.h

小型编译器之C-词法分析器 可以作为一般小型编译器的模板

/****************************************************/
/* File: globals.h                                  */
/* Global types and vars for TINY compiler          */
/* must come before other include files             */
/* Compiler Construction: Principles and Practice   */
/* Kenneth C. Louden                                */
/****************************************************/

#ifndef _GLOBALS_H_
#define _GLOBALS_H_

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>

#ifndef FALSE
#define FALSE 0
#endif

#ifndef TRUE
#define TRUE 1
#endif

/* MAXRESERVED = the number of reserved words */
#define MAXRESERVED 6

typedef enum 
    /* book-keeping tokens */
   {ENDFILE,ERROR,
    /* reserved words */
    IF,ELSE,INT,RETURN,VOID,WHILE,
    /* multicharacter tokens */
    ID,NUM,
    /* special symbols */
    ASSIGN,EQ,EQQ,RT,COMMA,LPARENZ,RPARENZ,CON,CON1,LPAREND,RPAREND,RTT,LT,LTT,PLUS,MINUS,TIMES,OVER,LPAREN,RPAREN,SEMI
   } TokenType;

extern FILE* source; /* source code text file */
extern FILE* listing; /* listing output text file */
extern FILE* code; /* code text file for TM simulator */

extern int lineno; /* source line number for listing */

extern int EchoSource;
extern int TraceScan;
extern int Error; 
#endif